Disk-sharpener



E. NOUN'.

DISK SHARPENER.

APPLICATION man ocr. 2s. 14919.

1,370,350, Patented Mar. 1, 1921.

/:'OQ/j UNITED STATES ELZA NOLIN, OF MONROE, IOWA.

DISK-SHARPENER.

Specification of Letters Patent.

Patented Mar. 1, 1921.

Application led October 28, 1919. Serial No. 333,884'.

f! 10 r11-Z w 720m t may concern Be it known that l, ELZA NoLIN, a citizen of the nited States, residing Monroe, in the county of Jasper and State of Iowa,hav e invented certain new and useful improvements in Disk-Sharpeners, of which the iollowing is a specification.

rThis invention has for its object to provide an improved sharpener for the disks ot' narrows and other farming implements ernbodying such features oi:I simplicity and compactness as will adapt the Sharpener to convenient transportation.

another object is the provision of a disk -sharpener which may be conveniently applied to the disk supporting shaft along side oi the disk and which may be conveniently oscillated upon the sha-tt to sharpen the circumferential edge of the disk.

lilith the above and other objects in view, as will appear as the description proceeds, the invention comprises the various novel features oi construction and arrangement of parts which will be more fully described herein and set forth with particularity in the claims appended hereto.

Reference is had to the accompanying drawings forming a part oin this application, in which like reference characters indicate the corresponding parts 'throughout the several views, in which:

Figure 1 represents a fragmentary plan view of a harrow illustrating the invention applied to use, and

Fig. 2 represents a perspective view of the Sharpener detached.

Referring to the drawing in detail, where-4 in similar numerals indicate corresponding parts throughout the several views, the numeral 5 indicates the iiat elongated body of the Sharpener which may be conveniently and economically constructed of strap metal and is formed adjacent one terminal with a twist 6 forming the handle portion 7 lying substantially at right angles to the plane of the iiatportion of the body 5 for convenience in oscillating the Sharpener during use.

The opposite terminal of the body is formed with an aperture receiving a bolt 8 over which is pivotally mounted the looped terminal of a supporting hook 9, the latter being of such shape and size as to engage and support the Sharpener in position upon the shaft 9 of a harrow or other farming implement, as suggested in Fig. 1.

A substantially inverted U-shaped holder 10 having alined rectangular openings 12 in the leg or parallel portions thereof is slidably mounted upon the body 5 and is confined between the bolt 8 and the terminal twist 6. The holder 10 is prevented from turning upon the body owing to the polygonal cross sectional form of the latter and the apertures 12 are formed in such a manner as to maintain the central or web portion of the member 10 in spaced relation to the body 5 to aiiord adequate space for the sharpening element designated generally by the numeral 14.

A screv 13 preferably provided with an enlarged head for convenience of adjustment is threaded in an internally threaded aperture lformed transversely through the web portion ot' the holder 10 and is engageable at its inner terminal with the sharpening element 14 whereby the latter is rigidly clamped against the body 5 and accurately held in an adjusted position.

One terminal oi the sharpening element la is formed with a beveled sharpening edge l5 so disposed as to engage and to sharpen the edge of a disk 16 when the Sharpener is Vproperly applied to the axle 9L and oscillated and in practice have found that the sharpcning element may be formed from a flat file which, owing to the quality of metal from which the tiles are made provides'an adequate sharpening device.

In use, the hook 9 is engaged over the axle 9pv and by loosening the nut carried by the bolt 8 the hook may be moved into the proper angular relation to the body 5 in order that the edge oi the sharpening element 14 will be disposed in proper relation to the edge of the disk 16. The holder 10 is subsequentlyv adjusted, by loosening the screw 13, to dispose the cutting edge 15 in engagement with the disk. Upon retightening the screw the several parts are frictionally held in adjusted position and by a vertical oscillatory movement oi' the Sharpener the edge of the disk 16 is effectively sharpened.

What I claim is:

1. A. disk Sharpener including a body, an axle engaging member carried by one terminal thereof, a holder adjustable longitudinally of the body,`a longitudinally adjustable sharpening element confined between the body and holder, and means for rigidly clamping the sharpening elementagainst the body and for simultaneously securing the holder in adjusted position on the body.

2. A disk sharpener including a body, a substantially U-shapedv holder slidablyengaged therewith, a sharpening element confined between the web portion of the holder and the body, and inea-ns to secure the sharpening element in adjusted position.

3. A disk Sharpener including a body, an axle engaging member carried by one terminal thereof, a substantially U-shaped holder slidable longitudinally of the body, a sharpening element confined between the web portion oi the holder and the body, and meansv simultaneously securing the holder and sharpening element in adjusted position.

4. A disk Sharpener including a body, an axle engaging hook adjustably connected With one terminal or' the body, a handle at the opposite terminal of the body, a substann tially U-shaped holder movable longitudi* nally of the body, a sharpeningelement adjustable lon gitudnally between the Web portion of the U-shaped member and the body and provided with a terminalv cutting edge, and a screw fitted in the web portion of the U-shaped member movable against the sharpening element to simultaneously secure the latter and U-shaped member in adjusted position.

In testimony whereof, I affix my signature hereto.

ELZA NOLIN. 

